Perpustakaan Digital ITB

This study investigates issues in flow assurance focusing on slugging, corrosion, and hydrate formation in the pipelines of line A in structure X of the Jambi field, which consists of 14 operational wells and 4 manifolds. Pipelines themselves are the most common and safe method used for transporting hydrocarbons. Understanding flow assurance is crucial to ensure fluid flow during its transfer from the well to the final storage. In this study, simulations were conducted using transient simulation software. The simulation results indicate that 14 wells experienced slugging, 7 wells had already deposition in the pipelines, and the average corrosion rate exceeding 0.48 mm/yr. However, no hydrate formation occurred in this field. Following this, a sensitivity analysis was performed on the pipeline diameter and inhibitor injection to assess their effects on slugging and corrosion. The simulation results again shows that as the pipeline diameter increases, there is more space for the fluid to move within the pipeline, resulting in a decrease in the liquid hold-up fraction and an increase the area of pipeline exposed to the fluid. This will subsequently lead to an increase in the corrosion rate. Conversely, as the pipeline diameter decreases, the space available for the fluid becomes more limited, causing the liquid hold-up fraction to increase and the area of the pipeline exposed to the fluid to decrease. This will lead to a reduction in the corrosion rate. Changes in pipeline diameter also do not impact slugging. Inhibitor (mono ethylene glycol) injection proves to be an efficient method for addressing both slugging and corrosion. The inhibitor (mono ethylene glycol) will bind water molecules in the flowing fluid, thereby reducing the water content in the pipeline. The reduction in water content will maintain the stability of the flow in the pipeline, allowing slugging to be mitigated. Additionally, the reduction in water content can lower the corrosion rate, which in this case becomes below 0.48 mm/yr. This study contributes to the understanding of fluid dynamics and pipeline integrity in the oil and gas industry and provides practical solutions to industry challenges.